package Linklist;

import java.util.Scanner;

public class lc19 {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int val=sc.nextInt();
        while(val!=0){
            ListNode listNode=new ListNode(1);
        }


    }
    /*public ListNode removeNthFromEnd(ListNode head, int n) {

    }*/
}
